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<requiredRuntime> Element 

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Specifies that the application supports only version 1.0 of the common language runtime.

<requiredRuntime  
   version="runtime version"
   safemode="true|false"/>

Attributes and Elements

The following sections describe attributes, child elements, and parent elements.

Attributes

Attribute Description

version

Optional attribute.

A String value that specifies the version of the .NET Framework that this application supports. The string value must match the directory name found under the .NET Framework installation root. The contents of the string value are not parsed.

safemode

Optional attribute.

Specifies whether the runtime startup code searches the registry to determine the runtime version.

Safemode Attribute

Value Description

false

Looks in the registry. This is the default value.

true

Does not look in the registry.

Child Elements

None.

Parent Elements

Element Description

configuration

The root element in every configuration file used by the common language runtime and .NET Framework applications.

startup

Contains the requiredRuntime element.

Remarks

The <supportedRuntime> element should be used by all applications built using version 1.1 or later of the runtime. Applications built to support only version 1.0 of the runtime must use the <requiredRuntime> element.

The version attribute string must match the installation folder name for the specified version of the .NET Framework. This string is not interpreted. If the runtime startup code does not find a matching folder, the runtime is not loaded; the startup code shows an error message and quits.

Note

The startup code for an application hosted in Microsoft Internet Explorer ignores the <requiredRuntime> element.

Example

The following example shows how to specify the runtime version in a configuration file.

<configuration>
   <startup>
      <requiredRuntime version="v1.0.3705" safemode="true"/>
   </startup>
</configuration>

See Also

Reference

Startup Settings Schema

Concepts

Specifying Which Runtime Version to Use

Other Resources

Configuration File Schema for the .NET Framework